Armored cupola.



V E. TERNSTR'O'M. ARMORED cuPou.

APPLICATION FILED APR. 18. I914.

Patented June 27, 1916.

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E. TERNSTRU M.

ARMORED CUPOLA.

APPLICATION FILED APR. 18, 19M. 1,188,702. 1 Patented June 27,1916.

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E. TEnNsTRbM.

/ ARMORED CUPOLA.

APPUCATION FILED APR. 18, 1914.

WITNESSES.

Patented June 27, 1916. 3 SHEETS-SHEET 3- J mm B S .i r I W UNITED STATES PATENT OFFICE.

ERNST rnnnsrnom, or anmnrrn-scmmnrsn, BELGIUM, ASSIGNOB or ONE-HALF To j socmrn momma. JOHN COOKERILL, or. snaame, BELGIUM.

ARMOIBED CUPOLA.

Specification of Letters Patent.

Patented J une 27, 1916.

To all whom it may concern:

Be it known that I, ERNsT TERNsTRiiM, a subject of the King of Sweden, residing at No. 62 Qua-i des Carmes, Jemeppe-sur- Meise, Belgium, have invented new and useful Improvements in or Connected with Armored Cupolas, of which the following is a specification.

This invention relates to armored cupolas and especially to the arrangement of the ports or embrasures in the hood through which the gun is fired.

Heretofore cupolas have been constructed wherein the port or embrasure has had formed around it on the inner side of the hood a hollow spherical bed, in which an obturator or gas check, on the barrel of the gun, formed with a corresponding spherical surface is fitted, such spherical surfaces forming the pivot or joint upon which the training of the gun takes place.

Generally spea king the gas check upon the gun is sufiiciently elastic to allow of a certain distortion of the spherical joint, such as may be caused by a shot striking close to the port, without hindrance to the elevation of the gun, but even a slight distortion suffices to cause leakage around the gas check and a more pronounced distortion may render the working of the gun impossible.

The object of my present invention is to arrange the spherical joint and gas check, so that, notwithstanding that the hood may be injured locally or even displaced within certain limits, the laying of the gun and the tightness of the gas check will not be affected, and to this end my invention consists in arranging the gas check and the spherical joint entirely distinct from the hood.

According to my invention the spherical bed is formed as a separate part and is carried by the gun carriage or mounting, the said spherical bed being designed to enter a recess formed in the hood or cover around the embrasure' or port, the said recess being, however, of larger diameter than the spherical bed, so as as to leave a space suflicient to allow of a maximum distortion of the hood and other parts without injuring the spherical bed.

In the accompanying drawing :Figure 1 is a sectional elevation illustrating the application of my invention to a cupola, the hood or ca of which is'of wrought steel. Figs. 2 an 3. are respectively a side elevacap 6 the port or embrasure therein and c the.

spherical bed of the joint which is shown detached in Figs. 2 and 3 and which is designed to be secured to the gun mounting d. This spherical bed 0 which is of wrought metal is provided with a flange e which approximately corresponds with the internal surface of the hood around the embrasure, but in order to prevent gas from the muzzle of a gun, or from a shell bursting close to the port I) returning through the space 7 around the outside of the bed into the interior of the cupola, an annular packing g of elastic material is inserted between the hood and the flange e, as clearly shown in the drawings. As shown in Fig. 1, the said flange 6 is in the form of a ring which is screwed on to the bed 0 and which serves to clamp the packing ring 9 against the interior of the hood a, the said packing ring being advantageously surrounded by a band or clip 72., as shown in Figs. 1 and 2, and a part of which is shown detached in Fig. 4.

The arrangement shown in Figs. 5'to 7 is constructed on the same principle as that hereinbefore described; in this case, however, the spherical bed 71 instead of being provided with an inclined flange to' fit against the curved inner surface of the hood a is adapted to enter a vertical recess formed on the inside of the said hood, and is shown as forming part of the mounting 7c of the gun instead of being attached to the mounting as described in the revious arrangement. Also in this modification, the space between the outside spherical bed and the adjacent surface of the hood is filled by the elastic packing Z against which the ring on presses to hold the said packing in place.

Claims:

1. An armored cupola comprising a hood provided with a port, a gun mounting provided within said hood, a gun carried by said mounting and provided with an obtuwhich the o turator engages, and an elastic packing arranged between said spherical bed and the adjacent surface of said hood around said port. a

.2. An armored cupola comprising a hood provided with a port, a gun mounting provided within said hood,- a gun carried by said mounting and provided with an obturator having a spherical surface the axis of which is coaxial with that upon which the gun pivots in the mounting, a spherical bed provided upon said gun mounting with which the obturator engages, said spherical bed extending into said port but being out of contact with the wall of the same, and an elastic packing arranged between said spherical bed and the ad]acent surface of said hood around said port.

3. An armored cupola comprising a domeshaped hood provided with a port, a gun mounting provided within said hood, a gun carried by said mounting and provided with an obturator having a spherical surface, the axis of which is coaxial with that upon which the gun pivots in the mounting, a spherical bed provided upon said gun mounting with which the obturator engages, a flange ring screwed upon the spherical bed, and a packing ring provided between said flange and the adjacent surface of said hood around said port.

4:. An armored cupola comprising a domeshaped hood provided with a port, a gun mounting within said hood, a gun carried by said mounting and provided with an obturator having a spherical surface, a spherical bed provided upon said gun mounting with which the obturator engages, said spherical bed extending into said port but being out of contact with the wall of the same, an adjustable ring provided upon said spherical bed, and a packing provided between said ring and the adjacent surface of said hood around said port.

ERNST TERNSTROM. Witnesses:

H. SAVAGE,

VICTOR H. DURAs. 

